RFM Flags: Apply Instrument Lineshape Convolution
ILS Flag
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19JAN23
- Enabled
- Perform spectral convolution with (Apodised) Instrument Line Shape
(also known as a Spectral Response Function)
- Driver Table requires *ILS section
- *SPC section: RESSPC
interpreted as final output resolution only
(decoupled from Fine Mesh Calculation resolution).
- Disabled
- *SPC section: RESSPC
defines resolution both for Fine Mesh Calculation and for output spectra.
- Ignore *ILS section.
- Restrictions
- Incompatible with
AVG,
OPT and
TAB Flags.
- Notes
- The AVG provides a simpler means
of automatically convolving with a triangular line shape, which is the
recommended option if all you need
is an output grid which represents the average values over spectral intervals
rather than discrete samples of the spectrum.
- The incompatibility with the OPT flag
is ideological: instruments do not measure optical thickness directly,
so spectral convolution or averaging
in 'optical thickness' is meaningless. If you really
do want something representing convolved optical thickness
(and are you sure you do?) I suggest writing the convolved transmittance
spectrum τ and note that optical thickness χ = - ln τ, but I
wouldn't want to give the impression that I'm endorsing that sort of thing.
- Bugs
- Bug#37
(Fixed v5.13)
- Bug#34
(Fixed v5.13)
- Bug#21
(Fixed v5.03)
- Bug#19
(Fixed v5.03)
- Bug#12
(Fixed v5.02)
- Bug#11
(Fixed v5.02)